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VALENT
Certainty Turf Herbicide
Certainty Turf Herbicide is an effective selective, post-emergent herbicide that can treat a broad range of weeds, especially nutsedge and dallisgrass, in warm-seasoned turf and ornamentals.
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Certainty Herbicide product page
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09/09/25
09/09/25
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Certainty Turf Herbicide, manufactured by Valent, is an excellent selective, post-emergent herbicide containing the active ingredient Sulfosulfuron. Certainty Herbicide is easy to use and has a broad label for grass and broadleaf weeds.
This easy-to-use water-dispensable granule offers dependable control over hard-to-manage weeds through the active ingredient sulfosulfuron 75%. Its flexibility is further seen with its ability to be applied directly or over the top to newly seeded turf or established ornamentals in various seasons without harm.
Certainty Turf Herbicide is ideal for quickly eliminating weeds in warm-seasoned turf. It also successfully removes unwanted cool-seasoned turfgrass such as fescue, perennial ryegrass, Poa annua, and poa trivialis.
Tools Needed
You will need to mix the product into a sprayer of your choosing, such as a backpack or hand-pump sprayer. For the average job, a hand-pump gallon sprayer works best.
How to Use
- Step 1: Determine how much Certainty Turf Herbicide to use by measuring the square footage of the treatment site. To do this, measure the length and width of the treatment site in feet and multiply them together (length x width = square footage). For acreage, divide the square footage by one acre (square footage / 43,560 = acre). A general application of Certainty Turf Herbicide will use 1.25 oz. of product (equivalent to 5 small (0.16 gram) scoops) per 10 to 15 gallons of water per acre. For smaller treatment areas, use 0.75 oz. (equivalent to 1 large (0.8 gram) scoop) per 3 gallons of water per 1,000 sq. ft. Add 2 teaspoons (1/3 fluid ounce) of nonionic surfactant per gallon of water. The combined total of all treatments must not exceed 2.66 oz. of this product per acre per year.
- Step 2: In a sprayer of your choice, fill the sprayer three-fourths of the way with water and add the appropriate amount of product needed for your application. Fill the sprayer with water, close the lid, and shake the sprayer well to ensure it is mixed. Once mixed, add and mix in a nonionic surfactant to enhance the product.
- Step 3: Spot treat or spray the target areas, preferably with the sprayer on a fan spray setting for uniform coverage. Monitor the weeds and apply Certainty Turf Herbicide as needed after 1 to 2 weeks to achieve complete control.
Where to Use
Certainty Turf Herbicide can be applied to labeled weeds on highly managed turf, native grasses, landscaped areas, and ornamental nurseries. This product may be used in residential and commercial sites, including apartment complexes, athletic fields, cemeteries, golf course fairways, golf course roughs, golf course tees, and other golf course areas, hotel properties, nurseries, office complexes, parks, public places, retail sites, storage facilities, school grounds, sod and turfgrass seed farms, and other highly managed turfgrass sites.
This product is not for use on golf course putting greens.
When to Use
This product should be sprayed when weeds are small and actively growing early in the season. Do not disturb areas with mowing at least two days before or two days after application.
Safety Information
Certainty Turf Herbicide is safe to use around children and kids when applied according to the product label instructions. Always wear the proper personal protective equipment (PPE) when handling or applying this product.
Keep people and pets off-treated areas until the spray solution has dried.
Special Considerations
Heavy rainfall within 2 hours of application may wash this product off of treated foliage and may result in having to make a repeat application to achieve control.
A surfactant must be used with this product.
| Availability | Online |
| Restricted Use | No |
| Shipping Restrictions | 1.25 Ounce: AK, CA, CT, HI, IN, MI, NY, OR, RI, SC, VT, WA |
| Brand | VALENT |
| Keith's Pro Tips | "Spray Certainty Turf Herbicide early in the morning and scan the yard to focus treatments on weed hot spots rather than doing a full broadcast spraying to reduce wasting product.." |
| Product Drawbacks | Certainty Herbicide may require repeated agitation while spraying. |
| Target Pests | Certainty Turf Herbicide is a selective herbicide that controls the following: American, Annual, Applications, Arborvitae, Asiatic, Azalea, Barley, Bedstraw, Big, Blue, Bluegrass, Bougainvillea, Boxwood, Bulbous, Burning, Burweed, Bush, Buttercup, Carolina, Catchweed, Chickweed, Chinese, Clover, Common, Cranberrybush, Creeping, Crowfootgrass, Dandelion, Dwarf, English, Euonymus, False, Field, Forsythia, Fragrant, Fraser, Gardenia, Garlic, Geranium, Globe, Golden, Goldmound, Grass, Greater, Green, Ground, Henbit, Holly, Hydrangea, Ivy, Japanese, Jasmine, Johnsongrass, Juniper, Korean, Kyllinga, Lawn, Lilac, Little, Mockorange, Mondo, Monkey, Mountain, Mugo, Mustard, Ninebark, Nutsedge, Oine, Oleander, Panicled, Pennycress, Perennial, Periwinkle, Photinia, Pine, Prague, Preplant, Privet, Purple, Quackgrass, Redbud, Rhododendron, Rosemary, Roughstalk, Ryegrass, Sedge, Sedges, Serviceberry, Shepard's-purse, Shore, Spirea, Variegated, Velvet, Viburnum, Weigela, White, Wild, Winter, Wintercreeper, and Yellow. |
| Application Equipment | Backpack Sprayer, Pump Sprayer |
| Application Methods | Broadcast Spray, Spot Treatment |
| Active Ingredient | Sulfosulfuron 75% |
| Product Type | Herbicide |
| Formulation | Water Dispersible Granule (WDG) |
| Application Rate | You will mix 1-2.5 scoops of Certainty Herbicide per gallon of Water. Please refer to the label for more specific application rates. |
| Shelf Life | Certainty Herbicide has a shelf life of 3 years if stored in a cool dry environment. |
| Yield | Each 1.25 oz bottle of Certainty Turf Herbicide will treat anywhere from 10,000 sq. ft.up to 35,000 sq. ft. depending upon the application used. |
| Use Sites | Outdoors |
| Time to Kill | Certainty Herbicide is absorbed by both the roots and the foliage of plants and rapidly inhibits the growth of susceptible weeds. Susceptible weed growth stops within 24 hours of treatment even though visual symptoms are slow to develop. Susceptible weeds usually show yellowing or browning within 2 to 3 weeks. Warm, moist conditions following application will speed up the effects of the herbicide. Cold, dry conditions will delay effects. Weeds stressed by drought are less susceptible to this product. |
| Comparable Products | Image Herbicide, Sedgehammer |
| EPA Registration # | 524-534 |
| Restricted Use | No |
|---|---|
| Shipping Restrictions | AK, CA, CT, HI, IN, MI, NY, OR, RI, SC, VT, WA |
| Availability | Online |
| Signal Word | CAUTION |
| Keith's Pro Tip | "Spray Certainty Turf Herbicide early in the morning and scan the yard to focus treatments on weed hot spots rather than doing a full broadcast spraying to reduce wasting product.." |
| Target Pests Multi | Annual Sedge, Bulbous Bluegrass, Buttercup, Carolina Geranium, Catchweed Bedstraw, Common Chickweed, Crowfootgrass, Dandelion, Dollarweed, False Green Kyllinga, Field Pennycress, Fragrant Kyllinga, Globe Sedge, Green Kylinga, Henbit, Johnsongrass, Lawn Burweed, Lawn Pennywort, Little Barley, Perennial Ryegrass, Purple Nutsedge, Quackgrass, Roughstalk Bluegrass, Shepherdspurse, Tall Fescue, White Clover, Wild Garlic, Wild Mustard, Yellow_Nutsedge, Ground Ivy |
| Time to Kill | Certainty Herbicide is absorbed by both the roots and the foliage of plants and rapidly inhibits the growth of susceptible weeds. Susceptible weed growth stops within 24 hours of treatment even though visual symptoms are slow to develop. Susceptible weeds usually show yellowing or browning within 2 to 3 weeks. Warm, moist conditions following application will speed up the effects of the herbicide. Cold, dry conditions will delay effects. Weeds stressed by drought are less susceptible to this product. |
| Chemical Type | Herbicide |
| Formulation | Water Dispersible Granule (WDG) |
| Application Methods | Broadcast Spray, Spot Treatment |
| Product Drawbacks | Certainty Herbicide may require repeated agitation while spraying. |
| Active Ingredient | Sulfosulfuron 75% |
| Application Equipment | Backpack Sprayer, Pump Sprayer |
| Mix Rate | You will mix 1-2.5 scoops of Certainty Herbicide per gallon of Water. Please refer to the label for more specific application rates. |
| Use Sites | Outdoors |
| Yield | Each 1.25 oz bottle of Certainty Turf Herbicide will treat anywhere from 10,000 sq. ft.up to 35,000 sq. ft. depending upon the application used. |
| EPA Registration No. | 524-534 |
| Shelf Life | Certainty Herbicide has a shelf life of 3 years if stored in a cool dry environment. |
| Comparable Products | Image Herbicide, Sedgehammer |
| Children or pets? | No |
| Property Characteristics | None |
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